/**
 * Given a tuple of literal strings, return all unique combinations as a union of literal strings.
 *
 * @template S Tuple of literal strings.
 * @returns All possible combinations of the strings.
 * @example StringCombinaison<['a', 'b', 'c']> // 'abc' | 'acb' | 'bac' | 'bca' | 'cab' | 'cba'
 */
type StringCombinaison<S extends string[]> = (S extends [...infer T extends string[], infer H extends string] ? `${H}${StringCombinaison<T>}` | `${StringCombinaison<T>}${H}` : '') | (S extends [infer H extends string, ...infer T extends string[]] ? `${H}${StringCombinaison<T>}` | `${StringCombinaison<T>}${H}` : '');

export type { StringCombinaison };